75452780900 has 72 divisors (see below), whose sum is σ = 187217184000. Its totient is φ = 25856490240.

The previous prime is 75452780881. The next prime is 75452780911. The reversal of 75452780900 is 908725457.

It is a happy number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1417976 + ... + 1470224.

Almost surely, 2^75452780900 is an apocalyptic number.

75452780900 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75452780900 is an abundant number, since it is smaller than the sum of its proper divisors (111764403100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75452780900 is a wasteful number, since it uses less digits than its factorization.

75452780900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54333 (or 54326 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 75452780900 in words is "seventy-five billion, four hundred fifty-two million, seven hundred eighty thousand, nine hundred".